the northeastern edge of the southern basin, where Santa Rosa is situated. Aftermath Following the relatively high level of damage caused by the 1969 earthquakes, the city set about retrofitting buildings to improve their earthquake resistance by adding for instance cross-bracing to unreinforced masonry structures. The first buildings to be retrofitted were the St. Rose Church and Parish hall due to their high level of occupancy and lack of reinforcing. The safety standards adopted in Santa Rosa in 1970 provided a model for other cities in California when the state brought in requirements for retrofitting. An analysis of the effects on structures in Santa Rosa showed that it was necessary to design buildings using dynamic principles rather than just static, even in the case of a moderate intensity earthquake. See also List of earthquakes in 1969 List of earthquakes in California List of earthquakes in the United States References External links Santa Rosa, 1969 1969 History of Sonoma County, California History of Santa Rosa, California Earthquakes Earthquake clusters, swarms, and sequences